41157661 has 2 divisors, whose sum is σ = 41157662. Its totient is φ = 41157660.

The previous prime is 41157647. The next prime is 41157671. The reversal of 41157661 is 16675114.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25704900 + 15452761 = 5070^2 + 3931^2 .

It is a cyclic number.

It is not a de Polignac number, because 41157661 - 2¹⁵ = 41124893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41157671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20578830 + 20578831.

It is an arithmetic number, because the mean of its divisors is an integer number (20578831).

Almost surely, 2^41157661 is an apocalyptic number.

It is an amenable number.

41157661 is a deficient number, since it is larger than the sum of its proper divisors (1).

41157661 is an equidigital number, since it uses as much as digits as its factorization.

41157661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 41157661 is about 6415.4236804750. The cubic root of 41157661 is about 345.2631500669.

The spelling of 41157661 in words is "forty-one million, one hundred fifty-seven thousand, six hundred sixty-one".